Variability of Manson and Leaver locomotion scores assigned to dairy cows by different observers

Channon, A J and Walker, A M and Pfau, T and Sheldon, I M and Wilson, A M (2009) Variability of Manson and Leaver locomotion scores assigned to dairy cows by different observers. VETERINARY RECORD, 164 (13). pp. 388-392.

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Abstract

The gait scoring system developed by Manson and Leaver was used by five experienced observers to assess the gait of 83 milking Holstein-Friesian cows in a live recording session, and video recordings were made. The agreement between the scores of the observers at the live session, and between each observer's scores at the live session and a video session, were compared at three levels of stringency. The scores of the observers were highly variable at all but the least stringent threshold - whether a cow had a score of less than 3 or 3 or more, that is, whether it was not lame or lame.